In dealing with the medical decision-making with uncertainty, clinical diagnosis of diseases is very difficult without the intervention of domain experts. In this work, an approach has been developed that provides handheld support to the medical practitioners for the medical diagnosis of diseases. With the assistance of the three domain experts of Delhi-based Government hospital, linguistic information of four patients has been collected under intuitionistic fuzzy environment. VlseKriterijumska Optimizacija I Kompromisno Resenj method, a multi-criteria decision-making technique, is utilized to rank the diseases among the patients. It seems that the conclusive outcomes of the investigation are same as diagnosed by medical specialists.